Granted Patent
Utility
US 4,637,002 · App. 06/586,156
Seismic source vibrator having self tuning controller
Inventor:
John J. Sallas
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Mar 5, 1984
Inventor
John J. Sallas
Assignee (at issue)
Texas Instruments Incorporated
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.